Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (0d905b33-2198-40a6-95dd-83b19b89ed1d, A5108049426, Lin Li, Chengdu Technological University, 65, 261, 0000-0001-6687-3013, 2026-04-17 20:46:09.446656+00, 2026-04-17 20:46:09.446673+00, null, 9, 9, , ["Higher Education and Teaching Methods", "Energy Efficient Wire..., lin-li-59).